diff --git a/.gitignore b/.gitignore
index fd8f021..cc4ac38 100644
--- a/.gitignore
+++ b/.gitignore
@@ -35,4 +35,4 @@ test_*.py
 debug_*.py
 
 # Demo file (optional - comment out if you want to track it)
-# demo.xlsm
+*.xlsm
diff --git a/check_vba_access.py b/check_vba_access.py
deleted file mode 100644
index 867cd85..0000000
--- a/check_vba_access.py
+++ /dev/null
@@ -1,54 +0,0 @@
-"""
-检查 Excel VBA 项目访问设置
-"""
-
-import winreg
-import os
-
-def check_vba_project_access():
-    """检查是否启用了对 VBA 工程对象模型的访问"""
-
-    # Excel 版本的注册表路径
-    excel_versions = [
-        r"Software\Microsoft\Office\16.0\Excel\Security",
-        r"Software\Microsoft\Office\15.0\Excel\Security",
-        r"Software\Microsoft\Office\14.0\Excel\Security",
-    ]
-
-    print("Checking Excel VBA Project Access Settings...\n")
-
-    found = False
-    for version_path in excel_versions:
-        try:
-            key = winreg.OpenKey(winreg.HKEY_CURRENT_USER, version_path)
-            access_value, _ = winreg.QueryValueEx(key, "AccessVBOM")
-            winreg.CloseKey(key)
-
-            if access_value == 1:
-                print(f"[OK] VBA Project Access is ENABLED in {version_path}")
-                found = True
-            else:
-                print(f"[WARN] VBA Project Access is DISABLED in {version_path}")
-        except FileNotFoundError:
-            continue
-        except Exception as e:
-            print(f"[ERROR] Failed to check {version_path}: {e}")
-
-    if not found:
-        print("\n[INFO] VBA Project Access settings not found in registry.")
-        print("You may need to enable it manually in Excel.")
-
-    print("\n" + "="*60)
-    print("How to Enable VBA Project Access in Excel:")
-    print("="*60)
-    print("1. Open Excel")
-    print("2. Go to File > Options > Trust Center")
-    print("3. Click 'Trust Center Settings...'")
-    print("4. Go to 'Macro Settings'")
-    print("5. Check the box: 'Trust access to the VBA project object model'")
-    print("6. Click OK to save changes")
-    print("7. Restart Excel")
-    print("="*60)
-
-if __name__ == "__main__":
-    check_vba_project_access()
diff --git a/create_demo.py b/create_demo.py
deleted file mode 100644
index 5ed7d3d..0000000
--- a/create_demo.py
+++ /dev/null
@@ -1,83 +0,0 @@
-"""
-创建演示用的 Excel 文件，包含测试用的 VBA 代码
-"""
-
-import xlwings as xw
-
-# VBA 测试代码
-VBA_TEST_CODE = """Option Explicit
-
-Sub TestErrorProcedure()
-    Dim x As Integer
-    Dim y As Integer
-    Dim result As Double
-
-    x = 10
-    y = 0
-    result = x / y  ' 这里会触发除以零错误
-
-    Debug.Print "Result: " & result
-End Sub
-
-Sub TestTypeMismatch()
-    Dim x As String
-    Dim y As Integer
-
-    x = "Hello"
-    y = x  ' 这里会触发类型不匹配错误
-
-    Debug.Print "Y: " & y
-End Sub
-
-Sub TestSubscriptError()
-    Dim arr(1 To 3) As Integer
-    Dim value As Integer
-
-    arr(1) = 10
-    arr(2) = 20
-    arr(3) = 30
-    value = arr(5)  ' 这里会触发下标越界错误
-
-    Debug.Print "Value: " & value
-End Sub
-
-Sub TestSuccessfulProcedure()
-    Dim x As Integer
-    Dim y As Integer
-    Dim sum As Integer
-
-    x = 10
-    y = 20
-    sum = x + y
-
-    Debug.Print "Sum: " & sum
-End Sub
-"""
-
-def create_demo_file():
-    """创建演示用的 Excel 文件"""
-    app = xw.App(visible=True)
-    wb = app.books.add()
-
-    # 添加 VBA 模块
-    vba_project = wb.api.VBProject
-    module = vba_project.VBComponents.Add(1)  # 1 = vbext_ct_StdModule
-    module.Name = "Module1"
-    module.CodeModule.AddFromString(VBA_TEST_CODE)
-
-    # 保存文件
-    file_path = r"D:\python\xlwings\demo.xlsm"
-    wb.save(file_path)
-    wb.close()
-
-    print(f"演示文件已创建: {file_path}")
-    print("\n包含的测试过程:")
-    print("  - TestErrorProcedure: 除以零错误")
-    print("  - TestTypeMismatch: 类型不匹配错误")
-    print("  - TestSubscriptError: 下标越界错误")
-    print("  - TestSuccessfulProcedure: 成功执行的测试")
-
-    app.quit()
-
-if __name__ == "__main__":
-    create_demo_file()
diff --git a/demo.xlsm b/demo.xlsm
deleted file mode 100644
index 687bd97..0000000
Binary files a/demo.xlsm and /dev/null differ